Trigonometric and hyperbolic functions

This section describes functions for performing trigonometric and hyperbolic operations. In all of the functions, the arguments are expressions resolving to angles measured in radians, where x should be interpreted as a real number.

All angles are measured in radians.

All functions can be used in both the load script and in chart expressions.

Cosine of x. The result is a number between -1 and 1.

cos( x
)

Inverse cosine of x. The function is only defined if -1≤x≤1.
The result is a number between 0 and p.

acos( x
)

Sine of x.
The result is a number between -1 and 1.

sin( x
)

Inverse sine of x.
The function is only defined if -1≤x≤1.
The result is a number between - p/2
and p/2.

asin( x
)

Tangent of x.
The result is a real number.

tan( x
)

Inverse tangent of x.
The result is a number between - p/2
and p/2.

atan( x
)

Two-dimensional generalization of the inverse
tangent function. Returns the angle between the origin and the point represented
by the coordinates x and y. The result is a number between -
p and + p.

atan2( y,x
)

Hyperbolic cosine of x. The result is a
positive real number.

cosh( x
)

Hyperbolic sine of x.
The result is a real number.

sinh( x
)

Hyperbolic tangent of x.
The result is a real number.

tanh( x
)

Examples:

The following script code loads a sample table, and then loads a table containing the calculated trigonometric and hyperbolic operations on the values.